Process for protecting wool and fur from moths



Patented Se t. 4, 1928.

UNITED STATES PATENT OFFICE.

mar W03, 01' 019mm, GERMANY, ASBIGNOB '10 rmnmnmx VOBH.

II'RIEDB. BAYER m 00., OF LEVEBKUSEN, HEAD comma, mm.

IPBDCESS FOB PROTECTING WOOL AND FUR FROM IOT EB.

llo Drawing. Application fled Layout 11, 1921, Serial Io. 491,570. and in fiermany Kay 18, 1918.

The method hitherto employed for protecting materials from the ravages of moth has been to lace amongst them substances, such as nap thalene, camphor and pepper,

having a penetrating odour, which are of course only efiicacious so long as their odour persists.

This invention relates to a new rocess whereby materials liable to be attac ed by r moth can be permanently and completely protected.

According to this invention the materials are protected from moth by treating them with such a quantity of one or a mixture of i the substances hereinafter set out and in such a manner that the substance, owing to its fixed nature or its aflinity for the material, is'tenaciously retained thereby in suflicientfquantity to render the material mothroo P The substances employed are hydrofluoric acid, its salts, double salts, and complex compounds, for exam le, hydrofluoric acid, sodium fluoride, zinc uoride, aluminum fluoride, titanium fluoride, the double compound of aluminum fluoride with ammonium fluoride AIF, (NHJ hydrofluosilicic acid H,SiF,, titanium hydrofluoric acid H,TiF,, boro hydrofluoric acid BFJI,

) stannic hydrofluoric acid SnF,H,, molybdic hydrofluoric acid Mo,F,H,, etc. These substances are absorbed in suflicient uantity if the material to be rendered mot -proof is treated exactly in accordance with the method used for dyeing with acid dyestuffs.

The preserving substance (in ractice dissolved in water or in a colloi a1 form) is combined with the material to'be protected by treating the material with a bath of the substance similar to a dyebath to which may be added, if desired, an agent or agents which promote the adsorption of the substance.

The material, for example, wool, may be treated with the moth-proofing substance either before or after or during the dyeing of the wool.

The moth-proofing substance or substances referred to above may be applied to the I material to be protected with satisfactory results by subjecting the material to successive treatments in, for example, different baths.

The invention is illustrated by the followi ing examples, the parts being by weight Ewample 1.100 parts of wool are placed over night in a bath containin one part of titanium hydrofluoric acid H iF 2 pal ts of sulfate of zinc, parts of Glaubers salt and 3 parts of formic acid. It is then rinsed and dried.

Example 2.100 parts of wool are steeped over night in a bat (5000 parts of water) contain ng 3 parts antimonic acid dissolved 1n 2 parts hydrofluoric acid to form SbF 4HF, 3 parts concentrated H,so, and 3 parts of alum, after which it is rinsed and dried.

Example 32-100 parts of wool are boiled for one hour in a bath (5000 parts of water) containing 2 parts h drofluoric acid, 10 parts Glaubers salt an 3 parts concentrated sulfuric acid, after which it is rinsed and well dried.

Ewample 4-100 parts of wool are boiled for one hour in a bath (5000 parts of water) containing 4-5 parts sodium fluoride and 10 parts Glaubers salt, after which it is rinsed and well dried.

Exam Ze 5.100 parts of wool are placed in a co d solution (5000 parts of water) containing 4 parts of the double salt of aluminum fluoride with ammonium fluoride having most probably the formula A1F,(NH,),, 3 parts aluminum sulfate and 3 parts concentrated sulfuric acid; after two ours the goods are rinsed and dried.

I claim 1. Process for protecting wool, fur and other similar materials against attack by moth which comprises treating the same with a solution containing an inorganic compound of fluorine ,in a manner similar to the method em loyed for dyeing fabrics with acid (1 estu s, whereb the inorganic compound 0 fluorine is fixed in the material in moth-proofing quantity.

2. Process for protecting wool, fur and other similar materials against attack by moth which comprises treating the same with a solution containing an inorganic salt of fluorine in a manner similar to the method employed for dyeing fabrics with acid dyestuffs, whereby the inorganic salt of fluorine is fixed ,in the material in moth-proofing quantity.

3. Process for protecting wool, fur and other similar materials against attack by moth which comprises treating the same with a solution containing a complex compound of fluorine in a manner similar to the method employed for dyeing fabrics with acid dyestuffs, whereby the complex compound of fluorine is fixed in the material in moth-proofing quantity.

4. Process for protecting wool, fur and other similar materials against attack by moth which comprises treating the same with a solution containing a double salt of fluorine in a manner similar to the method employed for dyeing fabrics with acid dyestuffs, whereby the double salt of fluorine is fixed in the material in moth-proofing quantity.

A moth-proofed material comprising a material liable to attack by moth impregnated with an inorganic fluorine compound, said moth-proofed material being substantially. proof against loss of its moothproofness by dusting or by washing with water as incurred in ordina usage and wear.

6. A moihroofe material comprising a material Iiab e to attack by moth and an inorganic compound of fluorine combined therewith by a dyeing procedure whereby said compound is tenaciously retained in said material against ordinary usage and wear.

7. A moth-proofed material comprising material liable to attack by moth im regnated with an inorganic double sa. t of fluorine.

In testimony whereof I have hereunto set my hand.

ERNST MECKBACH. [14. 3.]

CERTIFICATE OF CORRECTION.

Patent No. I, 682, 975.

Granted September 4, 1928, to

ERNST MECKBACIL- lt is hereby certified that the in patent was Bayer and Co., of Leverkusen near Cologne,

a d s ecified as "l. e. have been described 9 aid th tha said Letters Patent the same may conform to the record of the of Frankfurt a. m., Germany";

with this correction therein that case in the Patent Office. r

Signed and sealed this 9th day (Seal) erroneously described and specified as ame of the assignee in the above numbered "Farhenfab'riken vorm Friedr. Germany," whereas said name should Farbenindustrie Aktiengesellschaft,

should be read oi October. A. D. 1928.

M. J. Moore, Acting Commissioner of Patents.

pound of fluorine in a manner similar to the method employed for dyeing fabrics with acid dyestuffs, whereby the complex compound of fluorine is fixed in the material in moth-proofing quantity.

4. Process for protecting wool, fur and other similar materials against attack by moth which comprises treating the same with a solution containing a double salt of fluorine in a manner similar to the method employed for dyeing fabrics with acid dyestuffs, whereby the double salt of fluorine is fixed in the material in moth-proofing quantity.

A moth-proofed material comprising a material liable to attack by moth impregnated with an inorganic fluorine compound, said moth-proofed material being substan- CERTIFICATE OF Patent No. l, 682, 975.

tially. proof against loss of its moothproofness by dusting or by washing with water as incurred in ordina usage and wear.

6. A moihroofe material comprising a material liab e to attack by moth and an inorganic compound of fluorine combined therewith by a dyeing procedure whereby said compound is tenaciously retained in said material against ordinary usage and wear.

7. A moth-proofed material comprising material liable to attack by moth im regnated with an inorganic double sa. t of fluorine.

In testimony whereof I have hereunto set my hand.

ERNST MECKBACH. [14. s.]

CORRECTION.

Granted September 4, 1928, to

ERNST MECKBACIL- lt is hereby certified that the in patent was Bayer and Co., of Leverkusen near Cologne,

case in the Patent Office. r

Signed and sealed this 9th day (Seal) erroneously described and specified as and that the said Letters Patent the same may conform to the record of the aine of the assignee in the above numbered "Farhenfab'riken vorm Friedr. Germany," whereas said name should Farbenindustrie Aktiengesellschaft,

G. should be read oi October. A. D. 1928.

M. J. Moore, Acting Commissioner of Patents. 

